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A. H. NERO.

ELECTRIC LAMP SOCKET.

APPLICATION FILED APR. 7. 1917.

1 ,3 1 6 ,45 9 Patented Sept. 16, 1919.

Iml QM Attest: Inventor:

by q v/a h. NERO UNITED STATES PATENT OFFICE.

envn n. mane, or NEW BRITAIN, comcrrcur, ssrenon To run mow nnncrterc COMPANY, OF HARTFORD, CONNECTICUT, A

conronn'r on or connncrreu'r.

ELECTRIC-LAMP SOCKET.

To all whom it may concern Be it known that I, Anvn) H. NERO, a citizen of the United States of America, and residing at New Britain, in thecounty of Hartford and State of Connecticut, have invented a certain new and useful Improvement in Electric-Lamp Sockets, of which the following is a specification.

My invention relates to electric lamp sockets and the object of my invention is to provide a socket of simplified construction in which the assembly of the parts is readily accomplished by a slmple operation with a minimum time consumption and the least possible number of securing screws;

In the accompanying drawings,

Figure 1 is a side elevation of the body portion of a lamp socket in which my invention is illustratively embodied;

Fig. 2 is a cross section on the line 2-2,

Fig. 1;

ig. 3 is a plan thereof;

F igi. 4- is a section on the line 4-4, Fig. 2; an

Fig. 5 is a section on the line 55, Fig. 1.

In socket construction it is customary to secure the various terminals, frame members, etc., to the insulating base by independent securing screws. This not only necessitates a piercing of the porcelain at several points, thus weakening the already fragile material, but also consumes the time of operators in effecting the assembly of the parts and furthermore adds expense through the use of numerous brass securing screw san item of no small amount where sockets are made in large quantities.

By. the present construction I have eliminated much of the weakness and most of the unnecessary material by so arranging the parts that a single pair of screwbolts serves not only to unitethe porcelain buttons which form the insulating body of the socket, but at the same time to secure in position all of the various metal parts used in the construction.

The socket hereshown comprises a pair of insulating buttons and 11 recessed on their meeting faces to form a switch chamber 12, and ved at 13 to afford wire channels leading to the binding screws 14 and 15. Within the switch chamber 12 is arranged a switch mechanism of the shown in the Gates Patent No. 1,134, 32,

Specification of Letters Patent. Patented-Sept, 1919, I Application filed April 7, i

1917. serial no. 160,446.

mounted in a frame 16 having pairs of wings l7 and 18, which lie in appropriate slots 19 opening from the switch chamber and formed in adjacent faces of the buttons 10 v and 11. A thumb key 20 projects fromthe side of the socket and operates the switch mechanism, which need not be here described in detail, but comprises a rotary switch bar 21 which is adapted to bridge the space between the switch terminals 22 and 23 in the on position of the switch. The switch terminal 22 extendsfrom the switch chamber 12 into a channel 24 formed in the side of the button 11, and its inwardly oflset end underlies the angled base 25 of the wire terminal 14 seated in a recess 26 in the outer end of button 11. The otheriswitch' terminal 23 projects into side channel 27 and its ofi'set end 28 forms the center contact of the socket. The wireter'minal plate 29, carr ing binding screw 15 is integral with a yoge 30 which overlies the base flange 31 of the screw shell 32 and forms the direct electrical connection between the binding screw 15 and the screw shell 32. The center contact strap 28, and the conductors 22 and 25 leading from the wire terminal 14, all of which underlie the base flange 31' of the screw shell 32 are insulated from the latter by an insulating-disk 33, notched at 34 to permit the strap 29 to pass inward therethrough,

The various parts are united by the screw bolts 35 and 3 which pass through both buttons 10 and 11 and take into the yoke 30. The apertures in strap 28 and conductors 24 and 25 through which the bolts 35 and 36' respectively pass, are of such size that ample clearance is afforded between the edges thereof and the bolts to prevent short-circuiting ofthe socket. When the bolts 34 and 35 are screwed tight, the yoke 30 is drawn down firmly upon the metal parts interposed between it and the outer face of button 11 holding all of these parts rigidly in position; At thesame time-the switch frame is firmly clamped between the inner faces of the buttons by reason of the configuration of the walls of the switch chamber'12 The switch mechanism itself is self-contained p t fl as se t i the paten bovereferred to, so that there is no necessity for securingscrews to hold its parts in pro er position.

arlous modifications in details of construction and arrangements of parts will readily occur to those skilled in the art to accomplish the objects hereby attained without departing however from what I claim as my invention.

1. An electric lamp socket comprising a pair of insulating buttons recessed on their juxtaposed faces to form a switch chamber with slots opening therefrom, a switch mechanism arranged in said chamber and having a frame with wings entering said slots to position the same in the chamber and prevent "displacement thereof when the switch is operated, said frame being clamped between the opposite faces of the insulating buttons, lamp terminals mounted at one end of said body, spaced wire terminals, switch terminals at opposite sides of the switch chamber, and a single pair of screw bolts piercingsaid buttons in a direction parallel to the axis of the socket and serving as the sole means for securing all of said parts in assembled position.

2. An electric lamp socket, comprising an insulating body having at one end thereof a screw shell lamp terminal, conductors of opposite polarity lying between the base of said screw shell and the insulating body, insulation spacing said shell and conductors apart, and clamping screws piercing said conductors but spaced therefrom and serving to hold both said conductors and screw shell upon the insulating body.

3. An electric lamp socket, comprising an insulating body recessed to form a switch chamber, switch terminal straps passing from said switch chamber to the exterior of the socket body andaugled over one end of the latter, a screw shell lamp contact of different polarity overlying said angled ends of the terminal straps, and spaced therefrom by insulation, together with screw bolts piercing the insulating body and screw shell terminal and serving to clamp said straps between the base of the screw shell terminal and socket body, substantiallyas described. 4. An electric lamp socket comprising a pair of buttons recessed on their juxtaposed faces to form a switch chamber, a switch mechanism having a frame freely inserted but clamped between said juxtaposed faces in the assembled fitting, switch operating mechanism mounted in said frame, lamp terminals mounted at one end of said body, spaced wire terminals, switch terminals within said switch chamber, and a single air of screw bolts piercing said buttons in a p ane parallel to the axis ofthe socket and serving as the sole means for securing all of said parts in rigid, assembled position.

In testimony whereof I have signed my name to this specification.

ARVID H. NERO. 

